Protector mechanism for looms.



B. F. McGUINESS. PROTECTOR MECHANISM FOR LOOMS. APPLICATION FILED APR. 9. 1915.

l 1 79,947. Patented Apr. 18, 1916.

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\ BENJAMIN.F. MGGUINESS, 0F SAUNDERSVILLE, MASSACHUSETTS, ASSIGNOR TO OROMPTON & KNOWLES LOOIVI WORKS, OF WORCESTER, MASSACHUSETTS, A

'CORPORATION OF MASSACHUSETTS.

PROTECTOR MECHANISM FOR LOOIVIS.

Specification of Letters Patent.

Patented Apr.- 18, 1916.

Application filed April 9, 1915. Serial Nc.20,347.

siding at Saundersville, town of Grafton,

in the county of Vvorcester and State of Massachusetts, have invented a new and useful Protector Mechanism for Looms, of which the following is a specification.

This invention relates to a protector mechanism for looms and particularly to devices for periodically rendering such mechanism inoperative.

Applicants device is particularly designed for use upon very wide looms in which the protector rod or shaft sometimes exceeds forty feet in length. The inertia of a shaft of such length seriously interferes with the proper boxing of the shuttle when it is necessary for the shuttle to partially rotate the shaft before it can enter the shuttle box. For the purpose of avoiding such interference with the shuttle my invention contemplates the provision of devices for holding the dagger or protector in inoperative position until after the normal period for the boxing of the shuttle, thus avoiding interference therewith. The dagger is thereafter released to operate in the usual manner before the lay reaches its forward limit of travel.

It is the object of my invention to improve the construction of devices of this character, thereby attaining convenience of adjustment and application, and certainty in operation.

My invention further consists in certain devices, arrangements, and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claim.

A preferred form of my invention is shown in the drawings in Which Figure 1 is a transverse sectional elevation of a portion of a loom with my improvements applied thereto; Fig. 2 is a view similar to Fig. 1 but showing the parts in a different position; and Fig. 3 is a detail view showing the dagger in operative position.

Referring to Fig. 1, the loom side is indicated at 10 having the front rail 11 mounted thereon and supporting in turn the hunter or stop 12. The dagger or protec tor 13 is mounted upon the usual protector rod 14 extending longitudinally of the lay and supported thereon by brackets 15. A

binder finger 16 is secured to the shaft 14:

and is positioned to engage the shuttle binder 17 in the usual manner. While only a single finger is shown in the drawings, it will be understood that the shaft let extends to the opposite side of the loom Where a second finger is provided.

For the purpose of retaining the dagger in the inoperative position shown in Fig. 1 while the shuttle is making its flight, the dagger 13 is connected by a rod 18 to one end of a lever 19 mounted upon a fixed pivot 20. At its opposite end, the lever 19 carries a cam roll 21 positioned to engage a rotating cam 22 mounted upon the bot tom or cam shaft 23, said cam 22 being formed with two concentric portions 22 and 22 of different radii. When the roll 21 engages the portion 22 of greater radius the dagger 13 is moved to the position shown in Fig. 1, in which it is inoperative with relation to the hunter 12. The cam 22 is so timed with reference to the pick mechanism that the dagger will be held in this position until after the normal period for the boxing of the shuttle. The cam thereafter leaves the roll 21, permitting the binder finger 16 to press the binder 17 against the shuttle as shown in Fig. 2. The slight movement of the protector thus permitted is not sufficient to cause it to engage the hunter 12. Should the shuttle, however, fail to enter the shuttle boX, the binder 17 and finger 16 will move inward when released by the cam 22, thus permitting the dagger 13 to engage the bunter in the usual manner as shown in Fig. 3.

1 have shown the cam 22 as provided with a circumferentially adjustable section 24, by adjustment of which the point of release of the cam roll 21 may be varied. Similar results may be obtained by angularlv adjusting the cam 22 upon the cam shaft 23.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled in the art Without departing from the spirit and scope thereof as set forth in the claim and I do not yv'ish to be otherwise limited to the details herein disclosed, hiit What I do claim is:-

A protector mechanism for Wide looms comprising a dagger, alongitudinally extended shaft mounted on the lay and supporting said dagger, a finger movable with said shaft and positioned to engage the shuttle binder, and means to relieve the binder 6f the pressure of said finger during the normal period for theboxing of the shuttle and to restore said dagger and finger to operative condition before the dagger reaches its position of engagement, said=-meanscomprising a'continuously rotating cam, a lever having a cam follower at one end engaging said cam, and connections from said lever to said shaft, said cam When engaging said lever being effective to'depre'ss said dagger and move said finger away from said binder and said cam being adjnstahleto vary the timing of the period of release relatively to the movement of the la In testimony whereof I have hereunto set hand, in the presence of tWo subscribin witnesses p g BENJAMIN F. MOGUINESS. Witnesses:

F. GREEN, J. B.

(Iopies of this patent may be obtained for five cents each, by addressing the Commissioner of l atents,

' Washington; D. 0: 

